Transmission mechanism



May 12, 1925. 1,537,802

D. P. COLLINS.

TRANSMISSION MECHANISM Filed NOV- l, 1923 2 Sheets-Sheet 2 all three of which may 'e citizen ot the United States,

adaptable for Patentedl May l2, i925.

'uN-iran aresN y attrae DENNIS r. comme, orrirr'siiuaen, PENNSYLVANIA.

rnlliiv'siviission M'EcHANrsM.

-ppication led November 1, 1923. Serial No. 672,191.

To all whom may concern:

Be it known that I, DENNIS P. COLLINS, and resident of Pittsburgh, in the, county and State of `Peniisylvanim have invented zcertain' new and useful Improvements in litraiismission hieclianism; and I do hereby7 declare the following to be e fulhclear, and eriact description 'of the invention, such as will enable otheisskilled in the art to which it appertains to make and use the same.

, This invention relates to improvements in Vtransmission mechanism-one object of it ie to so construct such mechanism as top mvide one driving andtwo driven members, travel at diiierent speeds or at the same speed according to the amount of resistance necessary to be overcome .and so that all three o'said members shall have force whenin operation.

-i A further object is to so construct transmission mechanism' that the action ci a' clutch forming part oi the same shall he directly corelated to that of the driven members and not to the driving member whereby their speeds may be changed .to meet the force acting onl the drivenmembers. i A further object is to provide, in transmission mechanism, ainechanically actuated clutch ofsucli construction that 4a variation in the action of its members will cause av decrease in speed and corresponding increase in torque of the driven member of'a gearing mechanism without destroying the frictional adhesion or torque resistance ofthe clutching surfaces, whereby the 'action of the gearing mechanism shall be' such that it may runas one or be automatically varied and controlled by the load o'n or worleresistance of the driven member inl one direc of Allegheny i In the accompanying drawings; Figure 1 is a longitudinal sectional view illustrating an embodiment of my invention;

lied construction. In the drawing, the bottom member of a casing llisshown, but it Willbe understood that the casing will also include a top inember so that the mechanism `will be properly enclosed, and said casing is formed to provide seats for various bearing members, as hereinafter described.

A -revoluble member or iiy-vvheel 2 'is disposed within the casing and is made hollo low andserves to'en'close the differential gearings. rllhe hollow member or fly wheel .2 may compriseA two members 3 -4 bolted together as shown in the drawings and the Figure 2 is a similar view showing a modimemberfrnay be recessed to provide a seatrw 5 for aiianged head 6 at one end of a sleeve'?. between which friction bearing devices 8 are located.

A Sleeve or tubular shaft 9 is mounted within the sleeve 7 and wit-hin the tubular 80 shaft 9, the driving shaft l0 is disposed. A head 11 at the inner end of the tubular shaft 9 is located in the hollow weight mein# ber or fly-wheel 2 and constitutes a carrier Vfor the spider of planetary gearing also 35 located within the wheel 2. The spider iii` cludes a hub 12 and radial arms 13, the free end portions of the latter beingtlireaded for the reception of nuts 14 and the latter are located in notches or recesses 15 in the @o carrier 11. The hub ot the spider receives anti-friction devices 16 to Vprovide a bearing for the, inner end portion of .the driving shaft l0 and the inner end ot a driven shaft 17 also enters the flywheel and is disposed @5 adjacent the hub of the spider. The spider hub is also made with an internally toothed clutch ange -18 to receive tee l1 19 atV one ,end cfa clutch sleeve 20 mounted on and the driven shaft but 100 keyed to rotate with capable ,of longitudinal sliding movement thereomeesaid clutch sleeve being made. at its outer end with a. grooved enlargement 21 for connection of an operatingr lever (not shown) therewith. bolted to the tlyovheelI 2 and between said hub member and the casing 1, anti-friction bearing devices 23 are interposefd.y The hub member 2Q is also providediinlternally with an latter and the casing anti- A hub member. 22 is m5 annular series of clutch teeth 24 for co 110 operation with the teeth 19 of the clutch sleeve 20,. A. conical bracket 25 may be bevelled orbit gear 29 securely bolted to the inner face of the member 4 of the hollow fly-wheel 2. Hubs 30 are mounted on the arms 13 ofthe vspider and each of these hubs carries at its respective ends, a bevel gear31 to mesh with the orbit gear 29, and a bevel. gear 32 with which a driving gear 33 on the driving shaft 10 meshes.

vThe sleeve 7 carried by the weight member or fly-wheel 2, has slidingly mounted thereon but rotatable therewith. one member 34 of a friction clutch In the embodiment of the invention shown in the drawing, this friction clutch comprises two sets of 'friction plates 36-37, the plates 36 of one set alternating with the plates 37 of the other set, and the plates 3G may be carried by pins 38 projecting from the clutch member while the plates 37 may be mounted on pins 39 projecting from a. brake wheel l0 which is keyed to the spidercarrier sleeve 9s A brake band 41 is provided for co-operation with the brake wheel and may be operated b v means of suitable foot' or hand lever mechanism, not shown. A cup 42 is threaded into the clutch member 34 and is made internallywith an abutment'43 for one end of a spring 44,

said spring-encircling the sleeve '7 and 'bearing at its other end against a shoulder 45 on said sleeve. The spring normally tends to apply clutching pressure to t e clutch member 34 and to the clutch disks. ut such pressure may be regulated and controlled by a suitable foot or hand lever (not shown) suitably connected through a collar 46 and fork extensions 47. l

I t .Willbe apparent that the gears 31-32 are free lto-rotate about the axes.. of the spider and to revolve' about the axis of the spider. The force transmitted' to the planetary gears by the driving gear meets resistance 'at the orbit gear 29,' said-gear being fixed to the weight' member or flywheel 2 and the latter being connected with the clutch 35, the latter acting as a brake to supply the opposing force to the orbit gear, while the hollow fly-wheel supplies-the inertia of rest or motion to prevent any violent or sudden shock of the gear and clutch members and 'assist in the starting and accelerating of the driven member of the planetary gearing under excessive load.

It will be understood that when the teeth-;v`

-19 of the clutch sleeve 20 are in mesh with .theclutch teeth 18 in the huh of the spider,

-.forward motion will be imparted to the driven shaft. To reverse-the -direction of rotation of the driven shaft, the operator will move the' clutch sleeve 20 so that its teeth 19 will engage the'clutch teeth 24 in the hub member 22 of the Hy-wheel and at the same time he will cause the spring 44 to becompressed in a manner to relieve the resistance oifcred by the friction clutch .35, and when the brake band or shoe 41 is tightened o r compressed on the brake wheel 40 (with theuse of a suitable foot pedal or lever), the spider'will be held stationary and the .orbit gear 29. fiv-wheeland driven shaft 17 will be driven in the" reverse or backward direction.

When theluteh sleeve 20 is engaged wit-l1 the hub of Vthe spider and thevresistance of the driven shaft 17 .'is not great enough to break down adhesion of the"Y members of clutch 35, the mechanism will run in unison. When the resistance of the driven` shaft 17 is great enough to break down the adhesion of the members of clutch there will be a lowering of speed and an increase of leverage imparted to the driven shaft 17 by increasing 'the length of time through which the force of driving gear 33 is transmitted to Mv. improvements provide means for elast-ically connecting by predetermined force clutch andspring) the driven member of a planetary or differential mechanism -to 'a freely lmounted weight member fixed to the orbit gear of same, whereby their of# posing resistances may react on one another from the yforce of a driving member, to which each is attached through a planetary train,

thereby differentiating the time through which variables in worlrmay be. done by a driven member in proportion'to the volume required fromintinite to unison and vice versa,vwithout otherwise controlling these members. it,

It will be observed that one/'member of the friction clutch 35 is connected with'the spider of the planetary gearing; that the other memberof said clutch is connected with the orbit gear: that the weight member or iy-wheel is rotatable with the orbit gear; 'that the planetary train is interposed vbetween the respective clutch members, and that the act-ion of t he` clutch is directly corelated to thiatrof the driven members and not to thedriving-member whereby their speeds o n the driven members.

In Figure 1 of the drawing, the planetary i gearing is shownfas employing bevel gears, but it :will be understood that spur gearing may be employed, as shown in Figure 2.

may be changed to`meetthe forces acting roo.

los

teens-:ce2 l 'in Figaro 2, the spicier is indicatori at e8 and seid spider carries laterally;r projecting pins 49, on each ot which spurgears 50,

' 5l are mounted,--the former meshing with en orbit get-r 52 carried by the Weight member 53, and the spur gears 51 mshing with the driving gear 54.

Various changes might be mafie in the de tails of construction of the elements embodied in my invention Without departingt'rom the spirit of the latter or limiting its sco e, and hence I do not restrict myself to t e precise details herein set forth,4

Having fully described my invention what i claim' es new and desire to secure by Letters-Patent, is

4l. in transmission mechanism, the combination of e drivin"a member, a driven member annee anni?? with the, driving member, e friction clutch, a rotatable Weight .member connected with one member of the clutch, te train ot'v planetary gearing connected With another member of tlleclutch and adapted to drive the rotatable Weigbty member, means whereby the planetary gear-- ing may be actuated by the driving member,

and Ineens wherebyV the driven member may be operatively connected ywith the planetary gearing' or with therotatable Weight mein.

er., l A

2. in transmission mechanism, the combination with a spider, a trein 'of planetary gears carried by the spider, enti an orbit gear meshing' with some of the planetary gears, ot a Weight member rotatable with the orbit gear', a friction clutch, connections `between one member of the clutch andthe spider, connections between another men ber of the clutch 'and the Weight member, a driving sbait disposed concentric with the spider and the Weight member venel operatively connected with some of the planetary` gears to actuate the same, a driven shaft, anti ineens for connecting thedriven shaft with' the spieler or Witbthe orbit gear.

3. in transmission mechanism, the conibination of a rotatably mounted spider, a

titi

train of gearscorried' by the spider,a .clutch on the hub of the spider, an orbit gear mesh* ing with sorne ot the' gears earned by the spider, e driving shaft mounted concentric with the spider and operatively connected with some of the gears on the spider, a Weight member rotatable with the orbit gear, a clutch on said Weight inemben a. driven shaft, means for operatively connect` ing the driven shaft with the clutch on the Weight member or with the clutch. on the hub of the spider, and a friction clutch, one member oi' tbe friction clutcb being conthe clutch and tbc Weight member, erroneom tions between another member ot `the clntcii and tbe spider, a driving-shaft operativeiy connecte with some of the gears on the spider, e ririven shaft, and means iior engeging the driven sheftwitii tbe spider or with the Weight member..

5. In transmission mechanism, the combiw nation of a spieler, planetary gears carried titi Titi

by tite spider, an orbit gear meshing with Sonie of the planetary gears, a Weight member rotatablewith the orbit gear, a friction cintch having one member connectent with the weight member and another member connecte@ with tbeispider, tieltlable means for holclmg' the members oi the clutch in engagement, ymeans' tor releasing the clutcb, a brake cooioerating'with that member oie titi the clutch which is connected with the spirier, adrivingo shaft operatively con neet-ed with some of the gears on the spider, a driven shaft, anc`1 means for operatively connecting;F the driven shaft Witii the spider orwith the Weight member. 5. lin transmission mechanism, the come bination of a driving shaft, a driven shaft alined therewith, pianetary gearing interposed between the shafts, a hollow revoiuble Weight member housingY the planetary gearing and connected to an element thereC of, ineens whereby the planetary gearing will be actuated b v the driving shaft, means tor operatively connecting the driven shaft with an inner element of the pianetary gearm ingl or with the Weight member,a friction clutch, a brake cooperating With one inenrber of the clutch, connection between said member of the clutch anti the planetary gearing, andA connections between another member .of the clutch and the Weight inember.

in testimony whereof, i have signed this specication in the presence of two subscrib ing .witnessesn DENNIS P. CULLNS. Witnesses:

it, L. Bartime, G., Soenar.

its 

